/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 14:53:43,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 14:53:43,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 14:53:43,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 14:53:43,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 14:53:43,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 14:53:43,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 14:53:43,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 14:53:43,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 14:53:43,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 14:53:43,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 14:53:43,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 14:53:43,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 14:53:43,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 14:53:43,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 14:53:43,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 14:53:43,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 14:53:43,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 14:53:43,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 14:53:43,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 14:53:43,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 14:53:43,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 14:53:43,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 14:53:43,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 14:53:43,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 14:53:43,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 14:53:43,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 14:53:43,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 14:53:43,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 14:53:43,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 14:53:43,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 14:53:43,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 14:53:43,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 14:53:43,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 14:53:43,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 14:53:43,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 14:53:43,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-17 14:53:43,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 14:53:43,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 14:53:43,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 14:53:43,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 14:53:43,648 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 14:53:43,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 14:53:43,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 14:53:43,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 14:53:43,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 14:53:43,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 14:53:43,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 14:53:43,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 14:53:43,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 14:53:43,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 14:53:43,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 14:53:43,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 14:53:43,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 14:53:43,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 14:53:43,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 14:53:43,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 14:53:43,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 14:53:43,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 14:53:43,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 14:53:43,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-17 14:53:43,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 14:53:43,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 14:53:43,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 14:53:43,653 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-17 14:53:43,654 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-17 14:53:43,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 14:53:43,654 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-17 14:53:44,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 14:53:44,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 14:53:44,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 14:53:44,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 14:53:44,185 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 14:53:44,188 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2020-09-17 14:53:44,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec0789d2/2dc646bb2aa94e02a00c59e23b7d43f9/FLAG6de8c1870 [2020-09-17 14:53:44,960 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 14:53:44,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2020-09-17 14:53:44,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec0789d2/2dc646bb2aa94e02a00c59e23b7d43f9/FLAG6de8c1870 [2020-09-17 14:53:45,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec0789d2/2dc646bb2aa94e02a00c59e23b7d43f9 [2020-09-17 14:53:45,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 14:53:45,223 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 14:53:45,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 14:53:45,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 14:53:45,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 14:53:45,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 02:53:45" (1/1) ... [2020-09-17 14:53:45,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b735ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:45, skipping insertion in model container [2020-09-17 14:53:45,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 02:53:45" (1/1) ... [2020-09-17 14:53:45,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 14:53:45,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 14:53:45,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 14:53:45,877 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 14:53:45,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 14:53:46,010 INFO L208 MainTranslator]: Completed translation [2020-09-17 14:53:46,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:46 WrapperNode [2020-09-17 14:53:46,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 14:53:46,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 14:53:46,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 14:53:46,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 14:53:46,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:46" (1/1) ... [2020-09-17 14:53:46,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:46" (1/1) ... [2020-09-17 14:53:46,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 14:53:46,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 14:53:46,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 14:53:46,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 14:53:46,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:46" (1/1) ... [2020-09-17 14:53:46,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:46" (1/1) ... [2020-09-17 14:53:46,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:46" (1/1) ... [2020-09-17 14:53:46,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:46" (1/1) ... [2020-09-17 14:53:46,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:46" (1/1) ... [2020-09-17 14:53:46,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:46" (1/1) ... [2020-09-17 14:53:46,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:46" (1/1) ... [2020-09-17 14:53:46,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 14:53:46,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 14:53:46,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 14:53:46,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 14:53:46,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 14:53:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-17 14:53:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-09-17 14:53:46,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-09-17 14:53:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-09-17 14:53:46,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-09-17 14:53:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 14:53:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-09-17 14:53:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 14:53:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 14:53:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-17 14:53:46,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 14:53:46,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 14:53:46,216 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 14:53:46,717 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 14:53:46,718 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-17 14:53:46,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 02:53:46 BoogieIcfgContainer [2020-09-17 14:53:46,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 14:53:46,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 14:53:46,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 14:53:46,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 14:53:46,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 02:53:45" (1/3) ... [2020-09-17 14:53:46,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc9fc2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 02:53:46, skipping insertion in model container [2020-09-17 14:53:46,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:53:46" (2/3) ... [2020-09-17 14:53:46,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc9fc2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 02:53:46, skipping insertion in model container [2020-09-17 14:53:46,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 02:53:46" (3/3) ... [2020-09-17 14:53:46,735 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2020-09-17 14:53:46,747 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 14:53:46,748 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-17 14:53:46,757 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 14:53:46,758 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 14:53:46,790 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,791 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,791 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,791 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,792 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,792 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,792 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,793 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,793 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,793 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,794 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,794 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,794 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,795 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,795 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,795 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,796 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,796 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,796 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,797 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,797 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,797 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,797 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,798 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,798 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,798 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,804 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,804 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,805 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,805 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,805 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,805 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,806 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,806 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,814 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,815 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 14:53:46,858 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-17 14:53:46,882 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 14:53:46,882 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 14:53:46,882 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 14:53:46,883 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-17 14:53:46,883 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 14:53:46,883 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 14:53:46,883 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 14:53:46,883 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 14:53:46,902 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 78 transitions, 178 flow [2020-09-17 14:53:46,905 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions, 178 flow [2020-09-17 14:53:46,963 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-09-17 14:53:46,963 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-17 14:53:46,970 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 2/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2020-09-17 14:53:46,972 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions, 178 flow [2020-09-17 14:53:47,003 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-09-17 14:53:47,004 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-17 14:53:47,004 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 2/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2020-09-17 14:53:47,006 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 680 [2020-09-17 14:53:47,008 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 14:53:48,654 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-17 14:53:49,211 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2020-09-17 14:53:49,404 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-17 14:53:49,422 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1930 [2020-09-17 14:53:49,423 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-09-17 14:53:49,428 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 30 transitions, 82 flow [2020-09-17 14:53:49,452 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2020-09-17 14:53:49,455 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-09-17 14:53:49,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:53:49,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:53:49,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:53:49,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:53:49,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:53:49,481 INFO L82 PathProgramCache]: Analyzing trace with hash 535203952, now seen corresponding path program 1 times [2020-09-17 14:53:49,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:53:49,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100677129] [2020-09-17 14:53:49,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:53:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:53:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:53:49,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100677129] [2020-09-17 14:53:49,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:53:49,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 14:53:49,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [903382862] [2020-09-17 14:53:49,780 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 14:53:49,789 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 14:53:49,825 INFO L274 McrAutomatonBuilder]: Finished intersection with 79 states and 140 transitions. [2020-09-17 14:53:49,826 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 14:53:49,885 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [484#(not (= (select (select |#pthreadsMutex| |~#ma~0.base|) |~#ma~0.offset|) 0))] [2020-09-17 14:53:49,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 14:53:49,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:53:49,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 14:53:49,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 14:53:49,910 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 4 states. [2020-09-17 14:53:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:53:49,966 INFO L93 Difference]: Finished difference Result 150 states and 254 transitions. [2020-09-17 14:53:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 14:53:49,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-17 14:53:49,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:53:49,983 INFO L225 Difference]: With dead ends: 150 [2020-09-17 14:53:49,983 INFO L226 Difference]: Without dead ends: 149 [2020-09-17 14:53:49,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 14:53:50,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-17 14:53:50,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-09-17 14:53:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-09-17 14:53:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 253 transitions. [2020-09-17 14:53:50,048 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 253 transitions. Word has length 25 [2020-09-17 14:53:50,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:53:50,048 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 253 transitions. [2020-09-17 14:53:50,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 14:53:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 253 transitions. [2020-09-17 14:53:50,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:53:50,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:53:50,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:53:50,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 14:53:50,052 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:53:50,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:53:50,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1346228208, now seen corresponding path program 2 times [2020-09-17 14:53:50,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:53:50,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034010139] [2020-09-17 14:53:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:53:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:53:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:53:50,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034010139] [2020-09-17 14:53:50,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:53:50,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 14:53:50,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1862885423] [2020-09-17 14:53:50,291 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 14:53:50,296 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 14:53:50,310 INFO L274 McrAutomatonBuilder]: Finished intersection with 64 states and 101 transitions. [2020-09-17 14:53:50,310 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 14:53:50,388 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 14:53:50,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 14:53:50,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:53:50,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 14:53:50,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 14:53:50,391 INFO L87 Difference]: Start difference. First operand 149 states and 253 transitions. Second operand 5 states. [2020-09-17 14:53:50,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:53:50,437 INFO L93 Difference]: Finished difference Result 149 states and 252 transitions. [2020-09-17 14:53:50,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 14:53:50,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-17 14:53:50,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:53:50,440 INFO L225 Difference]: With dead ends: 149 [2020-09-17 14:53:50,440 INFO L226 Difference]: Without dead ends: 122 [2020-09-17 14:53:50,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:53:50,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-17 14:53:50,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-09-17 14:53:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-17 14:53:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 201 transitions. [2020-09-17 14:53:50,453 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 201 transitions. Word has length 25 [2020-09-17 14:53:50,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:53:50,453 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 201 transitions. [2020-09-17 14:53:50,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 14:53:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 201 transitions. [2020-09-17 14:53:50,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:53:50,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:53:50,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:53:50,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 14:53:50,456 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:53:50,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:53:50,457 INFO L82 PathProgramCache]: Analyzing trace with hash 352163958, now seen corresponding path program 1 times [2020-09-17 14:53:50,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:53:50,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654158077] [2020-09-17 14:53:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:53:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:53:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:53:50,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654158077] [2020-09-17 14:53:50,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:53:50,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 14:53:50,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1914703713] [2020-09-17 14:53:50,674 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 14:53:50,679 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 14:53:50,687 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 53 transitions. [2020-09-17 14:53:50,688 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 14:53:50,734 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 14:53:50,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 14:53:50,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:53:50,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 14:53:50,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-17 14:53:50,736 INFO L87 Difference]: Start difference. First operand 122 states and 201 transitions. Second operand 6 states. [2020-09-17 14:53:50,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:53:50,788 INFO L93 Difference]: Finished difference Result 164 states and 266 transitions. [2020-09-17 14:53:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:53:50,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-17 14:53:50,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:53:50,790 INFO L225 Difference]: With dead ends: 164 [2020-09-17 14:53:50,791 INFO L226 Difference]: Without dead ends: 98 [2020-09-17 14:53:50,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:53:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-17 14:53:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-17 14:53:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-17 14:53:50,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 161 transitions. [2020-09-17 14:53:50,800 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 161 transitions. Word has length 25 [2020-09-17 14:53:50,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:53:50,800 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 161 transitions. [2020-09-17 14:53:50,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 14:53:50,801 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 161 transitions. [2020-09-17 14:53:50,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 14:53:50,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 14:53:50,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 14:53:50,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 14:53:50,803 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 14:53:50,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 14:53:50,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1213192784, now seen corresponding path program 2 times [2020-09-17 14:53:50,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 14:53:50,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604203036] [2020-09-17 14:53:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 14:53:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 14:53:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 14:53:50,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604203036] [2020-09-17 14:53:50,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 14:53:50,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 14:53:50,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [445021222] [2020-09-17 14:53:50,992 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 14:53:50,996 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 14:53:51,008 INFO L274 McrAutomatonBuilder]: Finished intersection with 57 states and 87 transitions. [2020-09-17 14:53:51,008 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 14:53:51,072 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 14:53:51,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 14:53:51,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 14:53:51,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 14:53:51,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-17 14:53:51,073 INFO L87 Difference]: Start difference. First operand 98 states and 161 transitions. Second operand 6 states. [2020-09-17 14:53:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 14:53:51,107 INFO L93 Difference]: Finished difference Result 97 states and 160 transitions. [2020-09-17 14:53:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 14:53:51,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-17 14:53:51,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 14:53:51,108 INFO L225 Difference]: With dead ends: 97 [2020-09-17 14:53:51,108 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 14:53:51,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-17 14:53:51,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 14:53:51,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 14:53:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 14:53:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 14:53:51,110 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-09-17 14:53:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 14:53:51,110 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 14:53:51,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 14:53:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 14:53:51,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 14:53:51,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 14:53:51,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 02:53:51 BasicIcfg [2020-09-17 14:53:51,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 14:53:51,119 INFO L168 Benchmark]: Toolchain (without parser) took 5899.96 ms. Allocated memory was 137.4 MB in the beginning and 253.2 MB in the end (delta: 115.9 MB). Free memory was 99.2 MB in the beginning and 113.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. [2020-09-17 14:53:51,120 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-17 14:53:51,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 786.96 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 98.6 MB in the beginning and 160.9 MB in the end (delta: -62.3 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-09-17 14:53:51,122 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.45 ms. Allocated memory is still 200.8 MB. Free memory was 160.9 MB in the beginning and 158.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-17 14:53:51,123 INFO L168 Benchmark]: Boogie Preprocessor took 34.58 ms. Allocated memory is still 200.8 MB. Free memory was 158.8 MB in the beginning and 157.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-17 14:53:51,124 INFO L168 Benchmark]: RCFGBuilder took 617.34 ms. Allocated memory is still 200.8 MB. Free memory was 157.4 MB in the beginning and 133.1 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-17 14:53:51,125 INFO L168 Benchmark]: TraceAbstraction took 4391.63 ms. Allocated memory was 200.8 MB in the beginning and 253.2 MB in the end (delta: 52.4 MB). Free memory was 133.1 MB in the beginning and 113.8 MB in the end (delta: 19.3 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. [2020-09-17 14:53:51,130 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 786.96 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 98.6 MB in the beginning and 160.9 MB in the end (delta: -62.3 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.45 ms. Allocated memory is still 200.8 MB. Free memory was 160.9 MB in the beginning and 158.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.58 ms. Allocated memory is still 200.8 MB. Free memory was 158.8 MB in the beginning and 157.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 617.34 ms. Allocated memory is still 200.8 MB. Free memory was 157.4 MB in the beginning and 133.1 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4391.63 ms. Allocated memory was 200.8 MB in the beginning and 253.2 MB in the end (delta: 52.4 MB). Free memory was 133.1 MB in the beginning and 113.8 MB in the end (delta: 19.3 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.5s, 82 ProgramPointsBefore, 35 ProgramPointsAfterwards, 78 TransitionsBefore, 30 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 288 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1930 CheckedPairsTotal, 52 TotalNumberOfCompositions - PositiveResult [Line: 708]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 148 SDtfs, 62 SDslu, 280 SDs, 0 SdLazy, 65 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 12048 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...